Errata and Addenda to the Cossidae. By Dr. W. Rothschild. 451 



Cossus 1-nigrum is distinguished from henleyi by the more pointed wings, light yellowish grey ground- 

 colour and sharper and more separate black ti'ansverse lines and striae. A special difference is the black longi- 

 tudinal spot on vein 1, forming the lower part of the L-mark from which the species derives its name. 



Cossus niloticus Joann. is not the same as henleyi; it is much larger, more yellowish brown, with the 

 inaikings more separate, narrower and more diffuse. 



Length of forewing of henleyi ^ 18 mm $ 20 mm 

 ,, ,, ,, ,, niloticus ^ 22 mm $ 26 mm 



Expanse of henleyi ^ 38 mm $ 46 mm 



,, „ niloticus cJ 48 mm $ 58 mm. 



I>jspessa. 



D. emilia Stgr. Here has been omitted: — kurdistana Bang-Haas. Larger and with the ground-co- 

 lour almost white. Djenbekin (Kurdistan). 



To D. clathrata: — pallida .w6.s/7. wow., much lighter with the ground-colour almost white. Samarkand. 



albosignata subsp. nov. Similar to tristis Bang-Haas, but the dark markings of the middle of the upper 

 side of the forewing replaced by white. Transcaspia. 



suavis Stgr. is so different from jordana that it must be regarded as a distinct species. 



Dyspessa ( Cossus) saharae Lucas is a large, more ashy grey aberration of suavis. 



To genus Zeuzera : — stryx Gr.-Grsh. is not identical with nubiki Stgr. ; it is a well characterised Trans- 

 caspian local race, and must stand as — stryx Gr.-Grsh. Distinguished by the greater expanse and much darker 

 colour of all the dark markings. Ground-colour ashy grey. — speyeri Austaut is a second local race which is 

 much lighter than nubila; light patches whitish grey, dark portions restricted ashy grey. Persia. 



Pliragiuataiceia. 



P. furia Gr.-Grsh. is a well characterised species not in any way allied to castaneae. Both wings 

 strongly truncate, blackish brown with yellow edges, and much broader than in castaneae. 



P. territa Stgr. This species is divided mto two easily distinguishable local races, but must stand 

 as albida Ersch., the two forms differing as follows: albida Ersch. Ivory white without any dots. ab. trans- 

 caspica, much smaller, dwarfish. Transcaspia, Central Asia and Shanghai. — territa Stgr. Ivory to creamy- 

 yellow, with the dark dusting usually fine; Asia Minor (Amasia). 



P. roborowskyi is pure ivory white, n o t sandy yellow. 



C. cossus chinensis subsp. nov. More uniformly greyish brown, less strongly striated. The black wavy 

 lines not so broad. Collar and patagia uniformly milky white. Tsing-tau. — armeniaca subsp. nov. The largest 

 form of Cossus. Much lighter, forewing suffused with whitish grey; head, collar and thorax whitish grey; abdo- 

 men light greyish brown. Hindwing strongly marked with dark grey striae. $, length of forewing 48 mm, ex- 

 panse 108 mm. 



C. funkei Rob. This species is at once distinguished from C. cossus by the uniformly light brownish 

 grey abdomen, the narrow white edge of the patagia, and on the forewing by the subbasal and subterminal 

 dark grey bands and the large central dark grey spots. — Taurus. 



C. striolatus spec. nov. Antennae, head, thorax and abdomen whitish grey. Forewing greyish white, 

 entirely streaked with brownish grey, the striae mergmg together to form spots in the centre of the wing. A 

 narrow curved grey line towards the outer margin. Hindwing white. Expanse 44 mm, length of forewing 20 mm. 



C. sareptensis spec. nov. A small species resembling Holcocerus; yellowish wood-brown. Forewing 

 covered with blackish transverse striae; a straight dark band from the apex of the wing to vein 2. Length of 

 forewmg 16 mm. — Sarepta. 



C. nigrosignatus spec. nov. Similar to tapinus Piing.. but darker, with yellowish brown, not brownish 

 white hindwing. The striae at the apex of the cell are much closer together, broader, blacker, extending to vein 1 ; 

 the outer line is curved and not wavy. Length of forewing 20 mm. Akbes (Syria). 



C. divisa spec. nov. Head, thorax and abdomen light yellowish brownish grey, collar and patagia sandy 

 yellow. The basal two thirds of the forewmg are blackish brown with whitish costal spot, and the basal third 

 below the median vein reddish grey brown. Outer third yellowish grey-brown with dark striae and brown 

 costal spots. Hindwing brownish grey. Length of forewing 21 mm. — Panangan (Turkey). 



Holcocerus. 



H. nigrescens spec nov. Apparently the largest Palearctic species. $: head and thorax yellowish grey 



